Organic Cotton PillowCotton as a fill, defined
Cotton is the oldest pillow fill still in ordinary use and the one most often described in the vaguest terms, which is the gap this reference exists to close.
Cotton pillow guides
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Why do cotton pillows ship compressed in plastic, and how do they recover?
A cotton pillow bought online often turns up as a hard, flat roll sealed in plastic, a fraction of the size it will be on your bed. Sellers pack it that way to save on shipping. It doesn't mean the pillow is faulty. This page covers why sellers pack pillows like this, what the squeeze does to cotton fiber, and how to tell when yours has finished rising.
What is inside an organic cotton pillow, and what forms does the cotton take?
An organic cotton pillow is a woven cotton case wrapped around a fill of cotton fiber. Some or all of the cotton you sleep on was grown under organic farm rules. The fill comes in four forms, and the form decides how the pillow feels to you and how it ages. The word "organic" on a listing can describe the whole pillow or only the fabric you touch.
Why does a new cotton pillow smell, and how long does the smell take to fade?
A new cotton pillow mostly smells of the cotton itself and of the air it was sealed in. Raw cotton is between 86 and 96% cellulose by dry weight (ScienceDirect Topics, cotton fibre). Most of what you smell comes from the small remainder.
What are the types of pillow stuffing, and where does cotton fit among them?
Any bedding aisle shows a dozen names for what is inside a pillow. They come down to 3 families: fibers and feathers from animals, materials grown on plants, and synthetics made in factories. Cotton is one of the plant fibers. This page shows where it sits among the others and ranks none of them.
Why do cotton pillows flatten, and how much of it can you reverse?
A cotton pillow that arrived thick and springy can end up closer to a folded towel, and the question most people ask is whether that height is gone for good. Some of it is lost, and some of it is only hiding.
Does staple length decide how long a cotton pillow stays useful?
Staple length is the length of a cotton fiber. It is graded on every bale grown in the United States. It affects how well cotton holds together, first as yarn in the pillow cover and then as carded batting inside. It almost never shows up on a pillow listing, so you have to judge it from other signs.
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About this reference
What makes cotton behave the way it does in a pillow?
Staple length, construction and packed density, in that order, and every other property people notice follows from those three.
A cotton fill does not loft the way a hollow or crimped fibre does. It compresses, it packs, and how fast it packs is a function of how it was built rather than how much was put in.
Defining those terms properly is most of what this site does.
What does this reference define?
Six things, each with its terms defined on first use and its limits stated in the same sentence as its number.
Fibre length, where it comes from, and what it changes in a fill rather than in a yarn.
Batting, shredded and continuous fibre treated as three different objects.
How filled weight becomes loft and resistance, with the arithmetic shown.
What compacts, how fast, and which part of it recovers.
Whether to, at what temperature, and what drying does to the fibre.
What an organic textile standard reaches on a finished pillow, and what it does not.
How are claims handled here?
A claim arrives with the thing that supports it, or it does not arrive. Most answers here are conditional and say so.
The honest answer to a large share of pillow questions is that it depends. Each page states what it depends on and in which direction, which is more useful than a verdict.